Nai and the crew of the 2nd Ship head for the metropolis of Vantonam, with 1st Ship's Jiki on board under Captain Tsukitachi's orders.The group takes some time off to enjoy the city, but while browsing the Nyanperona Shop, they are called out by a young boy, and...?!Later, Nai receives a secret communication with a dire message from Karoku as Circus begins planning an attack upon the 'Smoky Mansion,' where Karoku says he is being held.After the fierce battle ends and the dust settles, what truth will await Nai and Gareki...?!